tensorlayer3/tensorlayer/decorators/utils.py

123 lines
3.8 KiB
Python

#! /usr/bin/python
# -*- coding: utf-8 -*-
"""
NOTE: DO NOT REMOVE THESE FILES. They are copied from Tensorflow repository and are necessary to build the library without installing TF.
Source: https://github.com/tensorflow/tensorflow/tree/master/tensorflow/python/util
They replace the following imports:
>>> from tensorflow.python.util import decorator_utils
>>> from tensorflow.python.util.deprecation import _validate_deprecation_args
"""
import re
import sys
__all__ = ["add_deprecation_notice_to_docstring", "get_qualified_name", "validate_deprecation_args"]
def add_deprecation_notice_to_docstring(doc, date, instructions):
return _add_deprecated_function_notice_to_docstring(doc, date, instructions)
def get_qualified_name(function):
# Python 3
if hasattr(function, '__qualname__'):
return function.__qualname__
# Python 2
if hasattr(function, 'im_class'):
return function.im_class.__name__ + '.' + function.__name__
return function.__name__
def validate_deprecation_args(date, instructions):
if date is not None and not re.match(r'20\d\d-[01]\d-[0123]\d', date):
raise ValueError('Date must be YYYY-MM-DD.')
if not instructions:
raise ValueError('Don\'t deprecate things without conversion instructions!')
def _add_deprecated_function_notice_to_docstring(doc, date, instructions):
"""Adds a deprecation notice to a docstring for deprecated functions."""
if instructions:
deprecation_message = """
.. warning::
**THIS FUNCTION IS DEPRECATED:** It will be removed after %s.
*Instructions for updating:* %s.
""" % (('in a future version' if date is None else ('after %s' % date)), instructions)
else:
deprecation_message = """
.. warning::
**THIS FUNCTION IS DEPRECATED:** It will be removed after %s.
""" % (('in a future version' if date is None else ('after %s' % date)))
main_text = [deprecation_message]
return _add_notice_to_docstring(doc, 'DEPRECATED FUNCTION', main_text)
def _add_notice_to_docstring(doc, no_doc_str, notice):
"""Adds a deprecation notice to a docstring."""
if not doc:
lines = [no_doc_str]
else:
lines = _normalize_docstring(doc).splitlines()
notice = [''] + notice
if len(lines) > 1:
# Make sure that we keep our distance from the main body
if lines[1].strip():
notice.append('')
lines[1:1] = notice
else:
lines += notice
return '\n'.join(lines)
def _normalize_docstring(docstring):
"""Normalizes the docstring.
Replaces tabs with spaces, removes leading and trailing blanks lines, and
removes any indentation.
Copied from PEP-257:
https://www.python.org/dev/peps/pep-0257/#handling-docstring-indentation
Args:
docstring: the docstring to normalize
Returns:
The normalized docstring
"""
if not docstring:
return ''
# Convert tabs to spaces (following the normal Python rules)
# and split into a list of lines:
lines = docstring.expandtabs().splitlines()
# Determine minimum indentation (first line doesn't count):
# (we use sys.maxsize because sys.maxint doesn't exist in Python 3)
indent = sys.maxsize
for line in lines[1:]:
stripped = line.lstrip()
if stripped:
indent = min(indent, len(line) - len(stripped))
# Remove indentation (first line is special):
trimmed = [lines[0].strip()]
if indent < sys.maxsize:
for line in lines[1:]:
trimmed.append(line[indent:].rstrip())
# Strip off trailing and leading blank lines:
while trimmed and not trimmed[-1]:
trimmed.pop()
while trimmed and not trimmed[0]:
trimmed.pop(0)
# Return a single string:
return '\n'.join(trimmed)